@article{23498,
      author       = "Inst. geograph. e cadastral and 19. IUGG - Vancouver,
                      August 9-22, 1987",
      title        = "Portugal. National Report on Geodetic and Geophysical
                      Works. Executed from 1983 to 1986  ",
      year         = "1987",
      note         = "Obr., mapky a tab. v textu. - Liter., 1 sv.",
}